My exhaust pipe is disconnected from the muffler, how do i reconnect it?

Disconnect the exhaust system before the converter and see how it runs. A shop can hook up a back pressure on the exhaust pipe and see if there is to much back pressure. A bad muffler or restricted exhaust pipe will act the same way.

Starting from the front, coming off the exhaust manifold should have, 1. Exhaust pipe, 2. Catalytic converter, 3. Exhaust pipe, 4. Resonator, 5. Tail pipe. Also, there should be an Oxygen sensor somewhere around the catalytic converter.

On most cars, if it is the original muffler, it will be welded into the exhaust system. You would need to cut the muffler out of the system with a pipe cutter, hacksaw, or torch to remove it. Aftermarket mufflers are installed with clamps. Those must be removed in order to remove the muffler. Even then, the clamps will crimp the pipes together and you often have the chisel the muffler collars off the exhaust pipe to remove.

its important to have the right amount of backprettiar in your exhaust, so if going from 2 mufflers and 2 pipes to a single one would need to enlarge the size of the pipe to compansate. or it wont breath right and end up gutless.

You can cut out the Y pipe and replace it with a flex pipe from parts store, then clamp each end of the flex pipe, the pipe diameter will be 1-7/8 or 2 inch, also for the pipe replacement piece would work from a sunfire or cavalier from 1995 and up, might need to replace the muffler strap too. as it can break from rusting, if not already rusted and broken.

If you are reffering to what is in the picture below, the pipe between the Cat and the muffler is just simply exhaust pipe. BUT, the flanges on the ends of the pipe are called collectors. I hope this help and I will never visit London ;)

Easiest way to find out is to put the car on jacks or ramps. Then roll under and examine your exhaust system. It could be your muffler, exhaust pipe, or catalyic converter. More than likely its a hole in the exhaust pipe before the muffler or your muffler has seperated from the rest of the exhaust.

NEED TO TAKE VECHICLE TO MUFFLER SHOP LET THEM FIX RUST PIPE WITH A NEW PIPE.LET MUFFLER SHOP FIX BECAUSE THEY CAN WELD JOINT SEAL BOTH NEW EXHAUST PIPE AND NEW MUFFLER SO YOU WONT GET CARBON MONOXIDE POISON LET MUFFLER SHOP CHECK ALL THE EXHAUST SYSTEM BECAUSE THE WHOLE SYSTEM COULD BE RUSTED DROP DOWN WHILE DRIVING YOU PROBABLY NEED NEW EXHAUST PIPE HANGERS.

You need to have your Catalytic converter checked. This sound like it is stopped up.

Flex pipe will work, or if it's a straight section of pipe you can buy a universal piece of exhaust tubing with flared ends, trim off the rusty ends on your original pipe with a hacksaw or Sawzall and slip in the new section. Clamp it with 2 muffler clamps and you're set. Total cost should be under $40.